Answer:
2
Step-by-step explanation:
Rise / Run
= 4/2
= 2
-2(x-6)-4=2(8-x)-x first perform indicated operations on both sides...
-2x+12=16-2x-x
-2x+12=16-3x add 3x to both sides
x+12=16 subtract 12 from both sides
x=4
Combine terms using exponent rules:

First rewrite everything so that you have 2^m terms and x^m terms
9514 1404 393
Answer:
about 24.58 m/s
Step-by-step explanation:
Multiply by conversion factors that change the units, but not the value.
(55 mi/h) × (1609 m/mi) × (1 h)/(3600 s) = (55×1609/3600) m/s
= 88495/3600 m/s ≈ 24.58 m/s
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<em>Additional comment</em>
The exact conversion uses 1609.344 meters per mile, so gives exactly 24.5872 m/s.